The increasing rate of obesity has become a major public health concern with national reports indicating 40% of African American adolescents are now overweight/obese. Little is known about effective weight loss interventions in ethnic minority adolescents. However, research has shown that ethnic minorities attend fewer intervention sessions, have higher attrition rates and lose less weight compared to Caucasians. Two fundamental problems related to this lack of progress are 1) lack of appropriate content of weight loss interventions for African American adolescents that integrate cultural issues, parenting skills, and motivational strategies for long-term change and, 2) poor dose of weight loss interventions because of participant fatigue and drop out. While previous weight loss studies for adolescents have been long lasting (12-25 weeks), our team developed a weight loss program that is a relatively brief (8-week) face-to-face intervention that integrates motivational (autonomy-support) and positive parenting skills (monitoring, social support, positive communication skills) for reducing z-BMI in overweight African American adolescents. Our team recently conducted a pilot study testing the feasibility of an 8-week on-line culturally tailored intervention, Thus, the goal of this project is to conduct a randomized controlled efficacy trial to address the problems with past studies by 1) making the face-to-face group intervention shorter, 2) using an on-line component to compliment the group-based intervention for increasing dose, and by 3) tailoring a motivational and parenting skills program directly to parents and adolescents skill levels and cultural background. 520 overweight African American adolescents and their parents will be recruited to participate. Phase I of the trial will test the efficacy of an 8-week face-to-face group randomized trial comparing motivational plus family-based weight loss (M+FWL) to a basic health (BH) education program on reducing z-BMI and improving diet and physical activity (PA) in overweight African American adolescents. In phase II of the trial participants will be re-randomized to either an 8-week on-line intervention or a control on-line program resulting in a 2 (M+FWL vs. BH group) x 2 (intervention vs. control on-line program) factorial design. A 6-month follow-up will examine whether adolescents in the 8-week M+FWL group plus 8-week on-line intervention program will show the greatest maintenance in reducing z-BMI.

We are investigating whether there is change in body mass index (BMI; age- and sex-adjusted based upon CDC norms) from baseline to 2 months and whether there are group differences (i.e., M+FWL vs. BH groups) in change in BMI in adolescents.

We are investigating whether there is change in body mass index (BMI; age- and sex-adjusted based upon CDC norms) from baseline to 4 months and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in BMI in adolescents.

We are investigating intervention effects on change in body mass index (BMI; age- and sex-adjusted based upon CDC norms) from baseline to 6 months post-intervention. Specifically, we will examine whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in maintenance in BMI in adolescents.

Minutes per day; We are investigating whether there is change of physical activity from baseline to 4 months and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in MVPA in parents and adolescents.

We are investigating whether there is change of Kcals at 4 months. We are looking at these effects for fruit and vegetable intake, as well as total fat intake and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in diet in parents and adolescents.

Examine the effects of psychosocial variables (autonomy-support, monitoring, communication) as potential mediators of the intervention effects on changes in z-BMI, dietary intake, and MVPA in adolescents.

Minutes per day; We are investigating whether there is change of physical activity at the 6-month follow-up and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in MVPA in adolescents.

We are investigating whether there is change of Kcals at 6-month follow-up. We are specifically looking at effects for fruit and vegetable intake, as well as total fat intake in adolescents, and vegetable intake, as well as total fat intake and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in diet in adolescents.

We are investigating whether there is change in body mass index (BMI; age- and sex-adjusted based upon CDC norms) from baseline to 4 months and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in BMI in parents.

We are investigating whether there is change in body mass index (BMI; age- and sex-adjusted based upon CDC norms) from baseline to 6 months and whether there are group differences (i.e., M+FWL & Intervention online, M+FWL & Control online, BH & Intervention online, BH & Control online) in change in BMI in parents.

Participants are randomized to motivational and family weight loss program plus the online intervention.

Behavioral: Motivational and Family Weight Loss

This group will receive the comprehensive motivational and family weight loss intervention.

Behavioral: Online Intervention

Participants will receive the online tailored weight loss intervention program after they have either received the motivational plus family weight loss program or basic health face-to-face program.

Experimental: Mot. & Fam. Weight Loss + Online Control

Participants are randomized to motivational and family weight loss intervention and then the online control program.

Behavioral: Motivational and Family Weight Loss

This group will receive the comprehensive motivational and family weight loss intervention.

Behavioral: Online Control

Participants will receive the online control program after they have either received the motivational plus family weight loss program or the basic health education program.

Experimental: Basic Health Educ. & Online Interv.

Participants are randomized to the basic health education program and then the online intervention program.

Behavioral: Basic Health Education

This group will receive the comprehensive basic health education intervention.

Behavioral: Online Intervention

Participants will receive the online tailored weight loss intervention program after they have either received the motivational plus family weight loss program or basic health face-to-face program.

Active Comparator: Basic Health Educ. & Online Control

Participants are randomized to the basic health education program and then to the online control program.

Behavioral: Basic Health Education

This group will receive the comprehensive basic health education intervention.

Behavioral: Online Control

Participants will receive the online control program after they have either received the motivational plus family weight loss program or the basic health education program.

Eligibility

Ages Eligible for Study:

11 Years to 16 Years (Child)

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

Must have a parent or primary caregiver who lives in the same house as the adolescent

Live within 60 miles of the program's office

Have at least 3 grandparents who are African American

Access to the internet

Children between the ages of 11 and 16

Child must have BMI above 85th percentile and below 99th percentile

Have no medical condition that would limit participation in moderate intensity exercise including life-threatening illness (e.g., immobile, severely disabled, or bed ridden)

Available and able to participate in measures and intervention activities over the next year

Exclusion Criteria:

Adolescents with chronic illness

Adolescents who require a specialized diet may not be eligible

Developmental delay

Partaking currently in another weight loss program

Contacts and Locations

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Please refer to this study by its ClinicalTrials.gov identifier: NCT01796067